Lens and lamp

Abstract

A lens (100) and a lamp. The lens (100) comprises: a lens body (110), which comprises a light-incident end connected to a light-emitting component (300) of the lamp, a light-emergent end arranged away from the light-emitting component (300), and an outer side wall (160) extending from the light-incident end to the light-emergent end; a light-incident cavity (120), which is located at the light-incident end and is configured to receive light rays emitted by the light-emitting component (300); and a light mixing portion (130), which is located on the side of the outer wall (160) facing the light-incident cavity (120), wherein the light rays emitted by the light-emitting component (300) are reflected by the light mixing portion (130), then intersect inside the lens (100), and are emitted from the light-emergent end. The light rays emitted by the light-emitting component (300) pass through the lens (100) and can achieve light mixing and color mixing inside the lens (100), and are finally emitted outward at a small angle, so as to achieve a good overall light emission effect, thereby improving the visual experience of users.

Description

Lenses and lamps

[0001] This application claims priority to a Chinese patent application filed on December 11, 2023, with application number 202323370433.X and invention name “Lens and Lamp”. The entire contents of this patent application are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of lighting technology, and in particular to a lens and a lamp. Background Art

[0003] In traditional light distribution components, in order to control the light to be emitted at a smaller angle, a single-segment free curve is usually used at the top of the low beam hole of the light distribution component to collimate the light. However, this often leads to uneven color mixing. In particular, when the light distribution component is assembled on an LED lamp, the lamp chip emits blue light. By applying phosphor to the excitation surface and allowing the blue light to hit the phosphor, the blue light can be mixed with the yellow light to form a white composite light. However, existing LED lamps have the problem of uneven spatial distribution of color. In other words, the phosphor is unevenly applied, which makes the light-emitting chip prone to generating side spots, affecting the light output effect of the lamp.

[0004] In view of this, it is indeed necessary to provide a lens and a lamp that can better mix light while controlling the light emission angle. Summary of the Invention

[0005] The purpose of this application is to provide a lens that can mix light and control the light emission angle.

[0006] To achieve the above objectives, the present application provides a lens, comprising:

[0007] A lens body, the lens body comprising a light-input end connected to the light-emitting component of the lamp, a light-output end away from the light-emitting component, and an outer sidewall extending from the light-input end to the light-output end;

[0008] a light incident cavity, located at the light incident end, configured to receive light emitted by the light emitting component;

[0009] The light mixing portion is located on a side of the outer wall facing the light incident cavity. The light emitted by the light emitting component is reflected by the light mixing portion, intersects inside the lens, and is emitted from the light output end.

[0010] Optionally, the lens further includes a light-controlling portion located at the light-emitting end, and the light reflected by the light-mixing portion intersects between the light-mixing portion and the light-controlling portion. The light-controlling portion is configured to refract the light reflected by the light-mixing portion to control the light-emitting angle of the light.

[0011] Optionally, the light incident cavity includes a light incident wall surrounding the axis of the lens body and extending in a direction away from the light emitting component, and the light emitted by the light emitting component is refracted by the light incident wall and then emitted toward the light mixing part.

[0012] Optionally, the light mixing part includes at least two concentrically arranged first rings, each of which has a first arc surface protruding toward the outside of the lens body, and the curvatures of any two adjacent first arc surfaces are different. From the axis of the lens body outward, the distance between the first ring and the light-emitting component gradually increases.

[0013] Optionally, the light-control portion includes at least two concentrically arranged second rings, each of the second rings having a second arc surface protruding away from the light-emitting component, each of the second arc surfaces having the same curvature, and the distance between the second rings and the light-emitting component gradually increases from the axis of the lens body outward.

[0014] Optionally, the light mixing part includes at least two first rings, and the light controlling part includes at least two second rings, the number of the first rings is consistent with the number of the second rings, the first rings have a first arc surface protruding toward the outside of the lens body, the second rings have a second arc surface protruding in a direction away from the light-emitting component, and / or the curvature of the second arc surface is greater than the curvature of the first arc surface.

[0015] Optionally, the first circular rings and the second circular rings are arranged in a one-to-one correspondence, and the light reflected by any of the first circular rings intersects at the focus of the second circular ring corresponding to the first circular ring.

[0016] Optionally, the light-emitting end includes a light-emitting surface and a non-light-emitting surface, the non-light-emitting surface is arranged at a position of the light-emitting end corresponding to the light-entering cavity, the light-emitting surface extends outward from the outer periphery of the non-light-emitting surface and obliquely in a direction away from the light-entering cavity, and the light-control part is arranged on the light-emitting surface.

[0017] Optionally, the angle between the light emitted by the light emitting component and the axis of the lens body is between 45° and 90°.

[0018] Another object of the present application is to provide a lamp comprising the above-mentioned lens.

[0019] To achieve the above objectives, the present application provides a lamp, comprising the above lens.

[0020] The beneficial effect of the present application is that compared with the prior art, the lens of the present application is provided with a light mixing portion in the lens, and the light emitted by the light-emitting component will intersect in the lens after being reflected by the light mixing portion, that is, the light is mixed in the lens. After the light mixing is completed in the lens, the light is emitted out of the lens. Compared with mixing the light on the light-emitting surface of the lens, the light emitted by the light-emitting component can be emitted from the lens at a smaller angle, and at the same time the light mixing effect is better and the light output is uniform. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] FIG1 is a three-dimensional structural diagram of a lens according to a first embodiment of the present application.

[0022] FIG2 is a cross-sectional view of the lens shown in FIG1 .

[0023] FIG3 is a diagram showing an optical path of the lens shown in FIG1 .

[0024] Description of reference numerals:

[0025] 100-lens;

[0026] 110 - lens body, 111 - lens body axis, 120 - light entrance cavity, 121 - light entrance wall, 130 - light mixing unit, 131 - first circular ring, 1311 - first arc surface, 140 - light control unit, 141 - second circular ring, 1411 - second arc surface, 150 - non-light emitting surface, 160 - outer wall;

[0027] 200-focus;

[0028] 300-light-emitting component, 310-substrate, 320-light-emitting unit. DETAILED DESCRIPTION

[0029] In order to make the objectives, technical solutions and advantages of this application clearer, this application is described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] It should be noted here that in order to avoid obscuring the present application due to unnecessary details, only the structures and / or processing steps closely related to the scheme of the present application are shown in the accompanying drawings, while other details that are not closely related to the present application are omitted.

[0031] In addition, it should be noted that the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0032] The present application provides a lens 100 for use in a lamp. The lens 100 will be described below with reference to specific embodiments.

[0033] Please refer to Figure 1. In this embodiment, the lens 100 includes a lens body 110. The lens body 110 includes a light incident end connected to the light-emitting component 300. The light incident end is provided with a light incident cavity 120 surrounding the light-emitting component 300. The light emitted by the light-emitting component 300 first enters the light cavity 120. The light incident cavity 120 includes a light incident wall 121 surrounding the axis 111 of the lens body and extending away from the light-emitting component 300. The light emitted by the light-emitting component 300 is emitted toward the light incident wall 121.

[0034] The lens body 110 also includes a light emitting end away from the light emitting component 300, and an outer wall 160 extending from the light input end to the light output end. The light emitted by the light emitting component 300 is refracted by the light input wall 121 of the light input cavity 120 and then emitted toward the outer wall 160. A light mixing portion 130 is provided on the side of the outer wall 160 facing the light input cavity 120. The light emitted by the light emitting component 300 is reflected by the light mixing portion 130 and then emitted toward the light output end. The light reflected by the light mixing portion 130 intersects inside the lens 100 and then emits outward from the light output end.

[0035] The lens 100 of the present application has a light mixing portion 130 disposed on the side of the outer wall 160 facing the light incident cavity 120, so that the light emitted by the light-emitting component 300 can intersect inside the lens 100, that is, light mixing is completed inside the lens 100. Compared with light mixing at the light output end, light mixing inside the lens 100 has a better light mixing and color mixing effect.

[0036] In this embodiment, a light control unit 140 is further provided at the light output end. Light rays reflected and intersected by the light mixing unit 130 are directed toward the light control unit 140, refracted by the light control unit 140, and then emitted outward. Light rays reflected by the light mixing unit 130 intersect between the light mixing unit 130 and the light control unit 140. After light mixing, the light rays reach the light control unit 140, which is configured to control the light rays to be emitted at a smaller angle. The light control unit 140 provided here not only achieves a better light mixing effect, but also enables the light rays to be emitted at a smaller angle relative to the axis 111 of the lens body, thereby better controlling the light emission angle and ultimately presenting a better light output effect.

[0037] In this embodiment, the light emitting end includes a light emitting surface and a non-light emitting surface 150. The non-light emitting surface 150 is arranged at a position in the light emitting end corresponding to the light incident cavity 120. The light emitting surface extends outward from the outer periphery of the non-light emitting surface 150 and obliquely in a direction away from the light incident cavity 120. The light control part 140 is arranged on the light emitting surface so that the light emitting end of the light emitting device can achieve the effect of no light emitting from the central part.

[0038] As shown in Figure 2, the light mixing part 130 includes at least two concentrically arranged first rings 131, and the first rings 131 have a first arc surface 1311 that bulges toward the outside of the lens body 110. The curvatures of any two adjacent first arc surfaces 1311 are different. At the same time, from the axis 111 of the lens body outward, the distance between each first ring 131 and the light-emitting component 300 gradually increases, and the light reflected by each first ring 131 will intersect, so that light of different colors can be better mixed.

[0039] In this embodiment, the number of the first rings 131 is between 4 and 20. When the number of the first rings 131 is within this range, the light mixing effect is better and the cost is lower. In other embodiments, other numbers of first rings 131 can also be set, and this application does not limit this.

[0040] The light control portion 140 includes a plurality of concentrically arranged second circular rings 141, the number of the second circular rings 141 being greater than or equal to 2, and each second circular ring 141 having a second curved surface 1411 convex in a direction away from the light-emitting component 300, and each second curved surface 1411 having the same curvature. The light reflected by the light mixing portion 130 has a large emission angle. By utilizing the light control portion 140 disposed at the light-emitting surface of the lens 100, the light is refracted by the second circular rings 141 of the light control portion 140 and can be emitted outward at a smaller angle, thereby preventing the light from being excessively dispersed. At the same time, the curvature of the second curved surfaces 1411 on all the second circular rings 141 is the same, so that the directions of the light emitted outward through the second circular rings 141 remain parallel, thereby achieving a better lighting effect.

[0041] In this embodiment, the light control portion 140 is arranged corresponding to the light mixing portion 130 on the outer wall 160. After the light reflected by the light mixing portion 130 intersects, all the light is refracted by the light control portion 140 and then emitted outward. At the same time, the number of second circular rings 141 is consistent with the number of first circular rings 131, and the second circular rings 141 are arranged in a one-to-one correspondence with the first circular rings 131, that is, the light reflected by each first circular ring 131 passes through the corresponding second circular ring 141 after intersection, and is refracted by the second circular ring 141 before being emitted outward. The light beams will not interfere with each other, thereby avoiding affecting the light output effect.

[0042] In this embodiment, the intersection point of the light reflected by any first ring 131 is located on the focus 200 of the second ring 141 corresponding to the first ring 131. In this way, the light is refracted by the second ring 141 and emitted outward in parallel, which has a better visual effect.

[0043] At the same time, the distance between the second ring 141 and the light-emitting component 300 gradually increases from the lens body axis 111 outward, so that the light reflected by each first ring 131 on the light mixing part 130 intersects between the light control part 140 and the light mixing part 130, ensuring that the light is fully mixed before reaching the light control part 140.

[0044] In this embodiment, the curvature of the second ring 141 is greater than that of the first ring 131 . The light reflected by the first ring 131 and emitted toward the second ring 141 is refracted by the second ring 141 , and the angle between the light and the lens body axis 111 becomes smaller.

[0045] In this embodiment, the angle of the light emitted by the light-emitting component 300 and the angle between the axis 111 of the lens body is between 45° and 90°. When the light emitted by the light-emitting component 300 is within this angle range, all the light is emitted toward the light incident wall 121 of the light incident cavity 120, avoiding waste of light.

[0046] The angle of the light emitted through the lens 100 changes with the curvature of the second circular ring 141 of the light control part 140. Specifically, when the curvature of the second circular ring 141 becomes larger, the angle between the angle of the light emitted through the light control part 140 and the vertical direction of the light-emitting component 300 will become smaller, that is, the emission angle of the light will become smaller. Conversely, when the curvature of the second circular ring 141 becomes smaller, the angle between the angle of the light emitted through the light control part 140 and the vertical direction of the light-emitting component 300 will become larger. The curvature of the second circular ring 141 can be set according to actual needs.

[0047] As shown in Figure 3, the lamp also includes a light-emitting component 300, which includes a light-emitting unit 320 and a substrate 310. One end of the lens 100 is connected to the substrate 310, and the light-entry cavity 120 is covered above the light-emitting unit 320. In this embodiment, the light-emitting unit 320 is an LED lamp bead, and the substrate 310 is a PCB flexible circuit board. In other embodiments, the light-emitting unit 320 may also be other types of light-emitting components.

[0048] In summary, the lens 100 of the present application includes a light mixing portion 130 and a light control portion 140. The light emitted by the light-emitting component 300 is reflected by the light mixing portion 130 and then intersects between the light mixing portion 130 and the light control portion 140 to perform sufficient light mixing inside the lens 100. The light after mixing is then refracted by the light control portion 140 and emitted outward at a small angle. The lens 100 can make the light mixing effect of the lamp better, the light output is uniform, and the user's visual experience is enhanced.

[0049] The above embodiments are only used to illustrate the technical solutions of the present application and are not intended to limit the present application. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present application.

Claims

1. A lens, applied to a lamp, wherein: The lens comprises: A lens body (110), the lens body (110) comprising a light input end connected to the light emitting component (300) of the lamp, a light output end away from the light emitting component (300), and an outer side wall (160) extending from the light input end to the light output end; A light incident cavity (120), located at the light incident end, configured to receive light emitted by the light emitting component (300); The light mixing portion (130) is located on a side of the outer wall (160) facing the light incident cavity (120), and the light emitted by the light emitting component (300) is reflected by the light mixing portion (130), intersects inside the lens, and is emitted from the light output end.

2. The lens according to claim 1, wherein: The lens further comprises a light control portion (140) located at the light output end, and the light reflected by the light mixing portion (130) intersects between the light mixing portion (130) and the light control portion (140), and the light control portion (140) is configured to refract the light reflected by the light mixing portion (130) so as to control the output angle of the light.

3. The lens according to claim 1, wherein: The light incident cavity (120) comprises a light incident wall (121) surrounding the axis of the lens body (111) and extending in a direction away from the light emitting component (300); the light emitted by the light emitting component (300) is refracted by the light incident wall (121) and then emitted toward the light mixing portion (130).

4. The lens according to claim 2, wherein: The light mixing portion (130) comprises at least two concentrically arranged first circular rings (131), wherein the first circular rings (131) have a first arc surface (1311) protruding toward the outside of the lens body (110), and the curvatures of any two adjacent first arc surfaces (1311) are different. From the axis (111) of the lens body toward the outside, the distance between the first circular ring (131) and the light-emitting component (300) gradually increases.

5. The lens according to claim 2, wherein: The light control portion (140) comprises at least two concentrically arranged second circular rings (141), wherein the second circular rings (141) have second arc surfaces (1411) protruding in a direction away from the light-emitting component (300), wherein the curvature of each of the second arc surfaces (1411) is the same, and, from the axis (111) of the lens body outward, the distance between the second circular rings (141) and the light-emitting component (300) gradually increases.

6. The lens according to claim 2, wherein: The light mixing portion (130) includes at least two first circular rings (131), and the light control portion (140) includes at least two second circular rings (141), the number of the first circular rings (131) is the same as the number of the second circular rings (141), the first circular ring (131) has a first curved surface (1311) protruding toward the outside of the lens body (110), the second circular ring (141) has a second curved surface (1411) protruding in a direction away from the light-emitting component (300), and / or the curvature of the second curved surface (1411) is greater than the curvature of the first curved surface (1311).

7. The lens according to claim 6, wherein: The first circular ring (131) and the second circular ring (141) are arranged in one-to-one correspondence, and light reflected by any of the first circular rings (131) intersects at the focus of the second circular ring (141) corresponding to the first circular ring (131).

8. The lens according to claim 2, wherein: The light emitting end comprises a light emitting surface and a non-light emitting surface (150), wherein the non-light emitting surface (150) is arranged at a position of the light emitting end corresponding to the light incident cavity (120), and the light emitting surface extends outwardly from the outer periphery of the non-light emitting surface (150) and in a direction away from the light incident cavity (120), and the light control portion (140) is arranged on the light emitting surface.

9. The lens according to claim 1, wherein: The angle between the light emitted by the light emitting component (300) and the axis (111) of the lens body is between 45° and 90°.

10. A lamp, wherein: A lens comprising the lens according to any one of claims 1 to 9.

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